Chanthy Leng

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It has been proposed that genetic predisposition to multiple sclerosis (MS) and other diseases with autoimmune features is conferred by T-cell receptor (TcR) genes in addition to HLA class II genes. Although a family study has suggested linkage of susceptibility to MS to TcR genes, reports of disease associations with restriction fragment length(More)
Multiple sclerosis (MS) has been reported to be associated with restriction fragment length polymorphism (RFLP)-defined alleles of the T cell receptor (TcR) alpha- and beta-chain genes. One hundred patients with MS, 23 with primarily chronic progressive MS and 77 with relapsing/remitting MS, as well as 100 controls were investigated with RFLP analysis of(More)
OBJECTIVE To identify factors associated with negative direct sputum examination among African and Cambodian patients co-infected by Mycobacterium tuberculosis and HIV. DESIGN Prospective multicenter study (ANRS1260) conducted in Cambodia, Senegal and Central African Republic. METHODS Univariate and multivariate analyses (logistic regression) were used(More)
We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process e^{+}e^{-}→ππX, based on a data set of 62  pb^{-1} at the center-of-mass energy of 3.65 GeV collected with the BESIII detector. These asymmetries can be attributed to the Collins fragmentation function. We observe a nonzero asymmetry, which increases with(More)
a r t i c l e i n f o a b s t r a c t We extract the e + e − → π + π − cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated luminosity of 2.93 fb −1 taken at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider is used. The cross section is(More)
Using 1.09×10^{9} J/ψ events collected by the BESIII experiment in 2012, we study the J/ψ→γη^{'}π^{+}π^{-} process and observe a significant abrupt change in the slope of the η^{'}π^{+}π^{-} invariant mass distribution at the proton-antiproton (pp[over ¯]) mass threshold. We use two models to characterize the η^{'}π^{+}π^{-} line shape around 1.85 (More)
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